Browsing by Author "Pineda Soler, Eloi"
Now showing items 1-20 of 131
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A hierarchically correlated flow defect model for metallic glass: Universal understanding of stress relaxation and creep
(2022-07-01)
Article
Open AccessDue to the structurally disordered arrangement of atoms and deviation from thermodynamic equilibrium, the physical and mechanical properties of metallic glasses can vary with time, temperature and magnitude of strain or ... -
Achieving structural rejuvenation in metallic glass by modulating ß relaxation intensity via easy-to-operate mechanical cycling
(2022-10-01)
Article
Open AccessStructural rejuvenation is an effective measure to optimize the mechanical properties of metallic glasses (MGs). Sophisticated solutions to rejuvenation include thermal cycling, laser shocking, and multiaxial stress ... -
Aging and structural relaxation of hyper-quenched Mg65Cu25Y10 metallic glass
(2014-12-05)
Article
Open AccessThe structural relaxation, glass transition and crystallization processes of Mg65Cu25Y10 metallic glass are studied by Differential Scanning Calorimetry (DSC) and Mechanical spectroscopy. The relaxation model derived from ... -
Analysis of the anelastic deformation of high-entropy Pd20Pt20Cu20Ni20P20 metallic glass under stress relaxation and recovery
(2022-04-30)
Article
Open AccessThe anelastic deformation behavior of Pd20Pt20Cu20Ni20 P20 high-entropy metallic glass was probed by monitoring the stress relaxation and recovery processes. The stress relaxation under consecutive strain steps can be ... -
Anti-aging in ultrastable metallic glasses
(2018-03-30)
Article
Open AccessAs ultrastable metallic glasses (UMGs) are promising candidates to solve the stability issues of conventional metallic glasses, their study is of exceptional interest. By means of x -ray photon correlation spectroscopy, ... -
Anti-Aging in ultrastable metallic glasses
(2018)
Conference report
Restricted access - publisher's policyMetallic glasses (MGs) show outstanding mechanical, physical and chemical properties and so provide a whole class of materials at the cutting-edge research in metallic and glassy systems1. However, MGs suffer from aging, ... -
Application of mechanically alloyed MnAl particles to de-colorization of azo dyes
(2018-04-15)
Article
Open AccessThe use of metallic particles has been shown to be an effective, low-cost method for degradation of many contaminating compounds. In this work, we analyze the efficiency of MnAl metallic powders for degrading azo dyes, ... -
Azo-dye degradation by Mn–Al powders
(2020-03-15)
Article
Open AccessManganese–Aluminum powders were recently reported to show high efficiency and fast reaction rates as decolorization materials for azo-dye aqueous solutions. This work presents a detailed study of different aspects of this ... -
Characterization of mechanical relaxation in a Cu-Zr-Al metallic glass
(2015-09-15)
Article
Open AccessThe temperature dependence of the relaxation times of Cu46Zr46Al8 glass was measured by means of mechanical spectroscopy and static stress-relaxation measurements. The weak intensity of secondary relaxation in this alloy ... -
Characterization of the stress-temperature-time relaxation spectrum of metallic glasses
(2018)
Conference report
Open Access -
Cinètica poblacional de processos de cristal·lització i recristal·lització
(Universitat Politècnica de Catalunya, 2002-05-21)
Doctoral thesis
Open AccessEls materials nanocristal·lins han esdevingut darrerament un dels camps de recerca més actius en l'àrea de la Ciència de Materials. Aquest tipus de materials, caracteritzats per la presència d'estructures organitzades de ... -
Comparing the atomic and macroscopic aging dynamics in an amorphous and partially crystalline Zr44Ti11Ni10Cu10Be25 bulk metallic glass
(Cambridge University Press, 2017-06-14)
Article
Open AccessSeveral recent X-ray photon correlation spectroscopy works have reported an anomalous atomic dynamics in hyperquenched metallic glasses. Here, we compare and contrast these microscopic dynamics with that found in a ... -
Comprehensive insights into the thermal and mechanical effects of metallic glasses via creep
(2022-02-10)
Article
Open AccessEvolution of deformation and relaxation behaviors of a prototypic metallic glass was explored by extensive creep tests under both physical aging and cyclic loading. Deep insights into the microstructure-induced dynamic ... -
Connection between mechanical relaxation and equilibration kinetics in a high-entropy metallic glass
(American Institute of Physics (AIP), 2024-02-02)
Article
Open AccessThe slow transition from an out-of-equilibrium glass towards a supercooled liquid is a complex relaxation phenomenon. In this Letter, we study the correlation between mechanical relaxation and equilibration kinetics in a ... -
Creep and recovery behavior of metallic glasses: a short review
(2024-01)
Article
Open AccessDue to the disordered structure of amorphous alloys, the complex structural dynamics involves the particle rearrangements with a large span in time and size scales. The characterization and mechanism of structural dynamics ... -
Creep deformation in metallic glasses: a global approach with strain as an indicator within transition state theory
(Elsevier, 2024-03-01)
Article
Restricted access - publisher's policyWithin the framework of transition state theory, the isothermal creep behavior of metallic glasses is elucidated through a unique global approach, where the topological state is exclusively linked to measured strain. Our ... -
Curs 0: preparació per als estudis a l’EEBE
(Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2022-05)
Article
Open AccessAquest article presenta el desenvolupament i primers resultats d'ús d'un conjunt de cursos virtuals que pretenen proporcionar uns coneixements inicials bàsics de Matemàtiques, Física i !ímica als estudiants que accedeixen ... -
Dealloying of Cu-Mg-Ca alloys
(Multidisciplinary Digital Publishing Institute (MDPI), 2018-11-08)
Article
Open AccessThe chemical dealloying of Cu-Mg-Ca alloys in free corrosion conditions was investigated for different alloy compositions and different leaching solutions. For some of the precursor alloys, a continuous, pure fcc copper ... -
Degradation of azo dyes by rapidly solidified metallic particles
(2015)
Conference lecture
Open AccessAzo compounds are one of the most common families of dyes used in textile and leather treatments. An important step during the treatment of water polluted by these compounds, is the degradation of the compounds by ...
